Berfunkle: A complement to communication

I was dropping my daughter off at daycare one morning. I thought the car that had just pulled up was the mother of a little boy in my daughters class so I waved. Turned out it was a man who I did not know at all that was dropping off his kids for another class. I guess he was just being polite and waved back, which apparently his very upset girlfriend/wife(?) did not like. I had to explain that I thought his car was her car, that I did not know him and it was a simple mistake. Something so innocent as a wave created unwanted, unnecessary drama. It was quite embarrassing and has taught me to make sure I know for sure who I am waving to.